Microbial Symbionts in Plant–Insect Interactions

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Protection and Biotic Interactions".

Deadline for manuscript submissions: closed (30 November 2025) | Viewed by 2040

Special Issue Editor

Key Lab for Biology of Crop Pathogens and Insect Pests and Their Ecological Regulation of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A&F University, Hangzhou 311300, China
Interests: insect symbiont; botanical pesticide; resistance to insecticide; symbiotic genome
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Special Issue Information

Dear Colleagues,

The Special Issue entitled "Microbial Symbionts in Plant–Insect Interactions" in Plants highlights the importance of unraveling complex ecosystems for advancing sustainable agriculture and preserving biodiversity. This edition keenly focuses on exploring the crucial roles of symbionts in plant–insect dynamics, investigating the fundamental roles of symbiotic microorganisms in governing the intriguing interactions between plants and insects. These interactions encompass, but are not limited to, influencing plant defense mechanisms against herbivorous insects, modulating insects' capacity to transmit plant viruses, and facilitating insects' adaptation to host plants. The intricate communication networks and biochemical pathways underpinning these interactions propel the study of microbial symbionts in plant–insect dynamics to the forefront of scientific exploration.

We warmly invite scholarly contributions that employ a diverse array of methodologies, encompassing, yet extending beyond, high-throughput sequencing techniques to unravel genomic or metagenomic foundations of symbiotic interactions, metabolomics to delineate metabolic pathways influenced by microbial activities, and computational modeling to forecast novel emergent properties within these intricate ecosystems. Understanding these mechanisms not only enhances our comprehension of ecological interdependencies but is also pivotal in devising innovative strategies for the impacts of global changes on ecosystems, including crop protection, sustainable agriculture, and biodiversity conservation.

This Special Issue aims to foster a comprehensive understanding of the tripartite interactions that constitute the architecture of ecosystems. It seeks to clarify the adaptive strategies developed by these organisms in adapting to environmental fluctuations that have led to such profound interdependencies and also to underscore practical implications for boosting agricultural output, preserving species variety, and enhancing ecosystem resilience. Your insightful contributions are eagerly awaited, as they hold the potential to elevate our understanding and propel this discipline to new frontiers.

Dr. Qiong Rao
Guest Editor

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Keywords

  • microbial symbiosis
  • plant–insect interaction
  • tripartite mutualism
  • microbiome
  • symbiont-mediated plant defense

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Published Papers (1 paper)

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Review

21 pages, 3524 KB  
Review
Gut Symbiont-Driven Adaptive Evolution of Herbivorous Insect–Plant Interactions and Its Ecological Implications
by Junming Li, Yaqi Yu, Lovemore Zulu, Nan Xu, Yanxue Pan, Wenze He, Xunyue Liu and Qiong Rao
Plants 2026, 15(1), 14; https://doi.org/10.3390/plants15010014 - 19 Dec 2025
Cited by 1 | Viewed by 1527
Abstract
The interaction between plants and phytophagous insects is one of the most complex relationships in ecosystems. By acting as direct third-party participants, gut symbionts redefine this binary antagonistic relationship. This article reviews the roles of gut symbionts in the adaptive evolution of phytophagous [...] Read more.
The interaction between plants and phytophagous insects is one of the most complex relationships in ecosystems. By acting as direct third-party participants, gut symbionts redefine this binary antagonistic relationship. This article reviews the roles of gut symbionts in the adaptive evolution of phytophagous insects, highlighting their important roles in degrading plant secondary metabolites, modulating plant defense responses, promoting insect nutrient absorption, and shaping immune phenotypes. Gut symbionts not only enhance the adaptability of insects by degrading plant defense compounds, but also significantly influence their physiological adaptation by manipulating plant defense signaling pathways, regulating the immune system of insects, and promoting their rapid adaptation to external stress. When insects are confronted with environmental changes or shifts of host plants, the dynamic plasticity of the gut symbionts provides them with evolutionary advantages. Reviewing the mechanism of action of intestinal symbiotic bacteria in the adaptive evolution of insects is helpful to deepen our understanding of the ecological interaction process between insects and plants. Full article
(This article belongs to the Special Issue Microbial Symbionts in Plant–Insect Interactions)
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